The title of the thread is the impact. If 75% of the most played Steam games are playable on the Steam Deck, that means they are also playable on Linux. The Steam Deck is the Trojan Horse that decouples PC Gaming from Windows. It doesn't mean that everyone is going to start installing Ubuntu or that this is the Year Of The Linux Desktop, but it does mean that Valve as a business, and thus a huge segment of the gaming population, is no longer beholden to Microsoft.